1. Start by cooking 1-2 pounds of ground beef and a diced medium-sized onion in a large skillet over medium heat. Stir occasionally until the beef is no longer pink, then drain the excess fat.
2. Add seasonings such as garlic powder, salt, black pepper, and mix in bacon bits or crumbled cooked bacon for a smoky flavor. Stir in 1/2 to 2/3 cup of ketchup and 2 tablespoons of mustard to create tangy cheeseburger flavors. If desired, add 2 tablespoons of pickle relish for a pickled zest. Let the mixture simmer for a few minutes, then remove from heat.
3. Transfer the prepared beef mixture into a 9×13 casserole dish, spreading it into an even layer as a base.
4. For added creaminess, pour a 10.5-oz can of cheddar cheese soup over the beef mixture and evenly spread it across the surface.
5. Arrange 24-32 ounces of frozen tater tots in a single, even layer over the beef mixture. This ensures the topping remains crispy and golden during baking.
6. Preheat your oven to 350-400°F based on your desired level of crispiness. Bake the casserole for 30-45 minutes until the tater tots are golden brown and the dish is heated through.
7. Once baked, sprinkle 2-3 cups of shredded cheddar cheese over the top of the casserole. Place it back in the oven for an additional 5 minutes to allow the cheese to melt thoroughly and create a gooey, golden crust.
8. Remove the casserole from the oven and allow it to cool for a few minutes. This resting period helps thicken the dish and makes it easier to serve.
9. Garnish your casserole with additional toppings like pickles, ketchup, or mustard, if desired, to enhance the cheeseburger experience.
10. Serve immediately and enjoy this crispy and delicious Cheeseburger Tater Tot Casserole with your family or guests.